Russia's historic Bolshoi Theatre has reopened with an exclusive party to celebrate a luxurious renovation that has taken six years, cost $700m and revived a revered cultural symbol scarred by centuries of use and abuse.Russian President Dmitry Medvedev opened the gala, which was attended by politicians and celebrities from all over the world.The 235-year-old building was shut down because of fears its foundations could crumble. Al Jazeera's Neave Barker reports from the Russian capital, Moscow.